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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 296 · 40 questions
TalentJR

The method (Start value is 100%): New value after a rise of p%: value + p% of value. After a fall: value − p% of value. Percent change = change ÷ starting value × 100. Two changes a% and b% one after the other: a + b + (a × b) ÷ 100, with a fall counted as minus.

NameDateTime takenScore ___ / 40
  1. 1.A water tank holds 3840 litres. 5% of the water is used. How many litres are left?
  2. 2.The price of a bicycle is ₹3100. It goes up by 25%. What is the new price (in ₹)?
  3. 3.A price goes up by 50% and then goes up by 20% more. By what percent has it gone up in all? =
  4. 4.A price goes up by 50% and then comes down by 15%. By what percent has it gone up in all? =
  5. 5.The price of a school bag changes from ₹3560 to ₹1780. By what percent did it come down?
  6. 6.The price of a school bag changes from ₹3200 to ₹3040. By what percent did it come down?
  7. 7.A price comes down by 50% and then comes down by 10% more. By what percent has it come down in all? =
  8. 8.A price comes down by 25% and then comes down by 15% more. By what percent has it come down in all? =
  9. 9.The price of a school bag changes from ₹540 to ₹324. By what percent did it come down?
  10. 10.The price of a school bag changes from ₹4800 to ₹6720. By what percent did it go up?
  11. 11.A water tank holds 940 litres. 30% of the water is used. How many litres are left?
  12. 12.A shop sells 1660 cups of tea a month. Next month it sells 20% more. How many cups does it sell next month?
  13. 13.A price comes down by 30% and then comes down by 10% more. By what percent has it come down in all? =
  14. 14.The price of a school bag changes from ₹1280 to ₹1408. By what percent did it go up?
  15. 15.A water tank holds 1680 litres. 15% of the water is used. How many litres are left?
  16. 16.A price comes down by 50% and then comes down by 5% more. By what percent has it come down in all? =
  17. 17.A price comes down by 15% and then comes down by 10% more. By what percent has it come down in all? =
  18. 18.The price of a school bag changes from ₹1300 to ₹650. By what percent did it come down?
  19. 19.A water tank holds 4940 litres. 5% of the water is used. How many litres are left?
  20. 20.A water tank holds 2440 litres. 30% of the water is used. How many litres are left?
  21. 21.A water tank holds 3700 litres. 15% of the water is used. How many litres are left?
  22. 22.A town has 4680 people. Its population grows by 15%. How many people live there now?
  23. 23.A town has 2580 people. Its population grows by 50%. How many people live there now?
  24. 24.The price of a school bag changes from ₹1300 to ₹1105. By what percent did it come down?
  25. 25.A shop sells 760 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  26. 26.The price of a bicycle is ₹4760. It goes up by 5%. What is the new price (in ₹)?
  27. 27.The price of a school bag changes from ₹3720 to ₹5208. By what percent did it go up?
  28. 28.A price goes up by 40% and then goes up by 10% more. By what percent has it gone up in all? =
  29. 29.The price of a school bag changes from ₹3300 to ₹4125. By what percent did it go up?
  30. 30.A price goes up by 15% and then goes up by 25% more. By what percent has it gone up in all? =
  31. 31.The price of a school bag changes from ₹2380 to ₹2261. By what percent did it come down?
  32. 32.The price of a school bag changes from ₹1660 to ₹1577. By what percent did it come down?
  33. 33.A water tank holds 620 litres. 5% of the water is used. How many litres are left?
  34. 34.The price of a bicycle is ₹3600. It goes up by 10%. What is the new price (in ₹)?
  35. 35.The price of a bicycle is ₹2560. It goes up by 25%. What is the new price (in ₹)?
  36. 36.A water tank holds 4740 litres. 50% of the water is used. How many litres are left?
  37. 37.A shop sells 2500 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  38. 38.The price of a bicycle is ₹4140. It goes up by 50%. What is the new price (in ₹)?
  39. 39.The price of a school bag changes from ₹3380 to ₹1690. By what percent did it come down?
  40. 40.A water tank holds 3120 litres. 15% of the water is used. How many litres are left?

Answer key

  1. 3648
  2. 3875
  3. 80
  4. 27.5
  5. 50
  6. 5
  7. 55
  8. 36.25
  9. 40
  10. 40
  11. 658
  12. 1992
  13. 37
  14. 10
  15. 1428
  16. 52.5
  17. 23.5
  18. 50
  19. 4693
  20. 1708
  21. 3145
  22. 5382
  23. 3870
  24. 15
  25. 836
  26. 4998
  27. 40
  28. 54
  29. 25
  30. 43.75
  31. 5
  32. 5
  33. 589
  34. 3960
  35. 3200
  36. 2370
  37. 2625
  38. 6210
  39. 50
  40. 2652

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